Spark-arrester and smoke-condenser for locomotives



(No Model.)

G. AIREY. SPARK ARRESTBRAND SMOKE CONDENSER FOR LOCOMOTIVES.

Patented Apr. 11, 1893.

UNITED STATES PATENT OFFICE.

GEORGE AIREY, OF BUFFALO, NEW YORK.

SPARK-ARRESTER AND SMOKE-CONDENSER FOR LOCOMOTIVES- SPECIFICATION forming part of Letters Patent No. 495,387, dated April 11, 1893. Application filed March 17 1893. fierial No. 466,458. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE AIREY, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented certain new and useful Improvements in Spark-Arresters and Smoke- Condensers for Locomotives; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains .to make and use the same.

My present invention relates to locomotive engines and has special reference to means for arresting and extinguishing sparks and condensing smoke, and the invention consists in certain improvements in construction which will be fully disclosed in the following specification and claims.

In the accompanying drawings which form part of this specification-Figure 1 represents a vertical longitudinal section (partly in side elevation) of the front end of a locomotive boiler provided with my invention; Fig. 2, a transverse section on the line cc, w, and Fig. 3 a top plan view.

Reference being had to the drawings and the letters thereon, A indicates the boiler provided with the ordinary fire-tubes a, supported at their front ends in a tube sheet b. Bis the uptake in which is the ordinary exhaust nozzle 0 and said uptakeis provided with a conduit 0, the end d of which is of less diameter or cross-sectional area than the portion e and extends down into the uptake above the nozzle 0 and constitutes the draft pipe for the stack. Around the cylindrical portion 6 of the stack are apertures f which are controlled by a valve 9 having apertures 72- which register with the apertures f and regulate the ingress of air as the valve is removed by the rod '5 or any other suitable means. From the part c the conduit 0 is gradually enlarged, is bent at k and flattened at Z beyond the bend and extends down into the water and spark receiving chamber D and terminates above the horizontal center of said chamber to conduct the smoke, gases, exhaust steam and sparks from the uptake into the water m in which the sparks are extinguished, the smoke 5o washed and the major portion condensed, and

the gases of the fuel arrested.

Below the extension 'n. of the conduit is a of any solid matter through the inclined spaces between said bars 0. It is obvious that the bars 0 may be set at such an acute angle as to overlap sufficiently to prevent the escape of solid matter through the passages between the bars and the flanges q omitted. The deflector has the further function of preventing the water m splashing about in the chamber D. The bars 0 are secured at their ends to bars 4" which in turn rest upon and are secured to brackets s in the chamber D.

The solid waste products of combustion gravitate to the bottom of the chamber D and are discharged therefrom through a suitablevalve i, while the major portion of the exhaust steam from the cylinders of the engines is condensed and keeps up the supply of water in the chamber D.

The variable cross-sectional area of the conduit O, enlarging gradually from the air ports f prevents crowding or choking in the stack as the steam, smoke and gases expand in their transit from the uptake to the spark chamber and provides unrestricted draft for the furnace of the boiler.

From the chamber D extends a short flat stack F, which is preferably of uniform crosssectional area throughout its length, and of the same, or preferably of a little greater cross-sectional area than the exit end of the conduit 0, which accommodates the egress of the uncondensed and liberated gases and the steam generated in the chamber D. The conduit O and stack F are joined in one casting, and provided with a flange u. by which the casting is secured to the shell of the uptake and the spark receiving chamber.

In the practical operation of my invention the water in the chamber D is kept in a state of agitation by the force of the exhaust steam, the smoke and the gases, and the water heated to the boiling point, by which the unc0ndensed exhaust steam and that generated in the chamber D pass through the stack F with such velocity as to maintain a constant and strong draft, and the water obtained from the condensation of the exhaust steam maintains the supply of water in said chamber. The smoke and gases in passing through the water are condensed and deprived of their noxious odors and only steam emitted from the stack F.

Having thus fully described my invention, what I claim is 1. The combination with the uptake of a boiler, and a water and spark receiving chamber, of a variable and expanding conduit communicating with said uptake and spark receiving chamber; and a grated horizontal deflector below the egress opening of said conduit in the spark receiving chamber above the water through which the sparks are discharged.

2. The combination with the uptake of a boiler and a spark receiving chamber, of a conduit communicating with the uptake and said chamber, and a horizontal deflector having inclined passages below the conduit through which the sparks are discharged and directed below the surface of the water.

3. The combination with the uptake of a boiler and a spark receiving chamber, of a conduit, and a horizontal deflector composed of inclined bars provided with horizontal flanges arranged in the spark receiving chamber.

4. The combination with the uptake of a boiler and a water and spark receiving chamber, of a conduit having a draft pipe and provided with circumferential air passages; means for controlling the ingress of air to said conduit and a horizontal deflector above the water in the spark receiving chamber.

5. The combination with the uptake of a boiler and a water and spark receiving chamber, of a conduit increasing in cross sectional area, and a stack whose cross sectional area is equal to the greatest cross sectional area of said conduit, and a horizontal deflector crossin g said chamber above the water and having inclined passages through which the sparks are discharged.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE AIREY.

Witnesses:

D. O. REINOHL, H. B. REINOHL. 

